According to the scientifically proven evidence, the darkest known material (substance) in the universe is Vantablack.
Vantablack is a nanomaterial that is darker than any other substance on Earth.
Vantablack is composed of a forest of vertical tubes “grown” on a substrate using a modified chemical vapor deposition process.
When light strikes Vantablack, instead of bouncing off, it becomes trapped and is continually deflected amongst the tubes, eventually becoming absorbed and dissipating into heat.
Vantablack, made out of carbon nanotubes, is designed by Surrey NanoSystems and absorbs 99.965% of all light that hits it (at 663 nm if the light is perpendicular to the material).
In fact, Vantablack can be created at 400 °C (752 °F).
This means that the human eye technically sees nothing when it looks at Vantablack.
The material is made up of millions of carbon nanotubes, each measuring two or three nanometers or roughly one millionth of a millimeter.
It is grown on aluminium foil.
Creases and bumps on the foil are easily picked up by the human eye. But once covered with Vantablack, all wrinkles and roughness seem to disappear.